Half to henry m



(No Mode1.).

H. A.MANSFIELD..

FIRE EXTINGUISHER. No. 35H85.

Patented 0613.119, 1886.

N. PETERS. Phmwlnnugupnn wahmgmn. D. c.

UNITED STATES PATENT EEicE.

HENRY A. MANSFIELD, OF BRIDG-EPORT, CONNECTICUT, ASSIGNOR OF ONE- HALF TO HENRY M. HARRINGTON, OF SAME PLACE.

FlFtE-EXTINGUISHER.

SPECIFICATIONforming part of Letters Patent No. 351,185, dated October 19,1886.

(No model.)

.To @ZZ whom. it may concern,.- f

Be it known that I, HENRY A. HANSFIELD, a citizen of the United States, residing at Bridgeport, in the county of Fairfield and Statef Connecticut, have invented certain new and useful Improvements in Fire-Extinguishers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others Io skilled in the art to which it appertains to make and use the same.

My invention relates more especially to the class of fire-extinguishers which are adapted to be carried about by hand, and has for its I5 object to simplify and improve the details of construction without increasing the cost of manufacture, so that the device will be durable, capable of remaining charged for a long period of time without its efficiency becoming 2o impaired, instantaneous and certain in operation, and adapted to be recharged an unlimited number of times.

With these ends in view, I have devised the simple and novel construction, of which the following description, in connection with the accompanying drawings, is a specification, numbers being used to indicate the several parts of the device.

It has heretofore been a serious objection to 3o this class of devices that owing to inherent defects of construction they have become wholly unreliable after remaining charged for a few months. In numerous instances serious loss has been occasioned by their refusing to oper- 3 5 ate at all.

In the drawings, Figure l is a central longi` tudinal section of the generating-cylinder with the chemical reservoir and discharge-pipe in elevation; Fig. 2, an enlarged sectional view 4o of both generatingcylinder and chemical reservoir; Fig. 3, a section corresponding with Fig. 2 on the line xx,- Fig. 4, atransverse section on the line y y, looking down; Fig. 5, a similar section on the line z e, looking down;

Fig. 6, a plan view of the cap, the operating lever being shown as in the opened position; Fig. 7, a similar view in the closed position, and Fig. 8 an enlarged plan view of the chemical reservoir detached.

Similar numbers denote the same parts in 5o all the figures.

It s of course well understood that this class of fireextinguishers are charged by filling the generating-cylinder with some suitable chemical solution, and filling the rescr- 5 5 voir with another chemical solution, and that the device is operated by allowing the chemical to escape from the reservoir into the generatingchamber, the rationale being that a great volume of carbonio acid gas is generated, 6o which finds its escape through the dischargetube, carrying quantities of fluid with it.

l indicates the generatingcylindcr, which is preferably made of wrought iron or brass, and screw-threaded at opposite ends to receive a cap, 2, and bottom 3.

4 is a discharge-tube, which extends from near the bottom of the generating-cylinder in-A to the cap and communicates with an opening, 5, therein.

6 is adischargc-nozzle, which is tapped into the cap and communicates with opening 5.

7 is a chemical reservoir, which is preferably made of vitreous material, as glass or porcelain, and is provided at its top with a slot, 8, for a purpose presently to be explained, and at its bottom with an opening, 9, near the side, as shown, through which the chemical in the reservoir escapes into the generating-cylinder when the reservoir is in the opened position. 8o The reservoir is held in place within the generating-cylinder by a bracket, 10, which is provided with acurved arm, ll, partially surrounding the reservoir, anda slot, 25, engaged loosely by a lug, 26, upon movable rest 27. The rest is provided with a valve, 12, which is adapted to close the opening in the bottom ofthe reservoir. This valve consists, preferably, of a solid piece of rubber, which is securely attached to the rest.

131s a stump upon the rest, which I use as an additional support for the chemical reservoir. As the reservoir rests partially on the stump, there is less friction upon the curved arm, so that the reservoir will turn easily in use.

14 is a rod, which is tapped into the cap and extends downward through the rest, the lower end thereof being screw-threaded. A nut, 15,

e l' l 351,185

at the lower end of this rod, permits the rest to be drawn up close to the bottom of the chemical reservoir, thus causing the valve to close opening 9 so perfectly as to insure that there will be no leakage of the chemical within the IGSBI'VOII.

16 is an operating-shaft, which passes through the cap and is provided at its lower end with a cross-piece, 17, which engages slot 8 in the chemical reservoir. I

18 is an operating-lever at the outer end of the shaft.

19 is a recess in the under side of thc cap 20, packing in said recess, and 21 a boss upon the shaft which holds the packing in the recess, thus preventing leakage at the top should the cylinder be placed in other than a vertical position.

22 is a cap which covers the discharge-nozzle when the device is not in use.

23 is a handle engaging ears upon cap 2 for convenience in transportation.

In order to avoid the possibility of any preci pitated chemicals getting into the dischargetube I have provided a strainer, 28, which maybe made oi'wire or perforated sheet metal, and is placed over the lower end of the discharge pipe. This strainer keeps the discharge-pipe clear at all times, no matter in what position the device may be placed, so that no clogging can take place to affect its action.

To charge the device the cap is removed and the chemical reservoir with it. The reservoir is lled with proper chemical solution, and then turned, so that valve 12 engages opening 9, nut 15 being tightened up to close the valve iirmlyinto place. The generating-chamberis then filled, or nearly so, with the other chemical and the cap 2 screwed back into place. Gap 22 is then screwedf upon the dischargenozzle, and the device is ready for use when occasion requires.

To operate the device cap 22 is removed and the operating-lever turned in toward the left.

As the cross-piece upon this lever is in engagement with slot 8 in the top of the reservoir the latter must turn when the handle is moved. It is only necessary to move the reservoir sufliciently to carry opening 9 away from the valve. This permits the contents ofthe chemical reservoir to pass into the generating-cylinder instantly, thus generating carbonio-acid gas, which finds its escape with the iiuid through the discharge-nozzle.

It will be seen that the parts are so constructed that none of them can be affected by the chemicals ordinarily used,and that instantaneous action cannot fail to take place the moment lever 18 is moved. Inorder to prevent the possibility of this lever becoming displaced in transportation or from any other cause, I have provided a spring, 24, upon the top of the cap,which engages said lever, holding it firmly against movement in either direction until the spring is pressed down.

It will be apparent that the various details of construction may be varied within reasonable limits without departing from vthe spirit of my invention.

1. In a tire-extinguisher, a generating-cylinder having a discharge-pipe, and an operating-shaft having across-piece at itslower end, in combination with a chemical reservoir having a slot, 8, engaged by said cross piece, an opening at its opposite end,and a rest provided with a valve adapted to engage said opening.

2. In a nre-extinguisher, a chemical reservoir having a slot, 8, at one end and an opening at its other end, in combination with a rest, whereby said reservoir is supported, and which is provided with a valve to engage said opening, and an operating-shaft having a crosspiece adapted to engage slot 8, whereby the reservoir may be turned to remove thc opening from the valve. i

3. In a {ire-extinguisher, a rotating chemical reservoir having an'opening, 9, at one end, in combination with avertically-movable rest, whereby said reservoirissupported,and which is provided with a valve adapted vto close said opening, a threaded rod, 14, which. passes through said rest,-and a nut upon said rod, whereby the valve is forced tightly against the reservoir after the latter has been turned into position.

4. In a tire-extinguisher,bracket 10 and rest 27, having valve 12, in combination with a chemical cylinder having an opening adapted to be closed by said valve, a slot, 8, and an operating-shaft having a cross-piece adapted to engage said slot.

5. Ina tire-extinguisher, the cap having a recess, 19, packing, and an operating -shaft having a boss, whereby the packing is held in place, and a cross-piece, 17, in combination with rotating chemical reservoir Ahaving an opening, 9, and a slot across its top which is engaged by the cross-piece, whereby said reservoir may be turned to operate the device.

6. The operating-shaft having lever 18 and cross-piece17, in combination with a rotating chemical reservoir having an opening, 9, and a slot, 8, which is engaged by said cross-piece, a rest for supporting the reservoir, and a spring, 24., which locks the lever in the cl'osed position.

7. The operating-shaft having cross-piece 17, and the chemical reservoir having slot 8 and opening 9, in combination with a movable,

rest having a valve adapted to engage said opening, a threaded rod adapted to pass v lever-having a cross-piece to engage the slot,

IOO

IIO

whereby the reservoir may be rotated to dis- In testimony whereof I affix my signatnrein 1o charge its contents. presence of two witnesses.

9. The generating-eyl-inder rest 27, having valve 12,anda discharge-tube having astrain- HENRY A. MANSFIELD. er7 28, to prevent precipitated chemicals from entering the tube, in combination with eheln- Vi'tnesses: ical reservoir 7, having slot 8 and operating- A. M. Woosrn, shaft 16, having eross-pieee 17, whereby the C. E. RUGGLES.

reservoir is turned away from the valve. 

